Here is how you can check for the expiry date of any LPG gas cylinder bottles, just in case it's being refurbished or repainted for sales again. Note, substandard gas cylinder bottles won't have this features on them. On one of the gas bottle neck ring dimensions, the expiry date is coded alpha numerically, which starts with A, B, C, or D; followed by two digit number e.g A10
The alphabets stand for quarters:
* A for March (First Qtr)
* B for June (Second Qtr)
* C for Sept (Third Qtr)
* D for December (Forth Qtr)
The digit stand for the year will it is valid. Hence, A10 would mean March quarter of 2010. Generally, the lifespan of LPG gas cylinder bottles is 15 to 20. In five years on an average, we test just to make sure and reconfirmed that the gas cylinders is in good condition, as with constant loading, transporting and during operation of gas cylinder, there is possibility of damage to the cylinders, physically, hence should be test every 5 years.
So, next time your LPG distributor comes with a refilled cylinder bottle, make sure you check the expiry date. Many LPG cylinder bottle vendors, even conceal the date, usually by pasting some stickers over it. So please, be extra careful while checking. If you get a gas cylinder bottle that have already pass the post Expiry Date, please return back immediately. They are highly prone to leaks or bursting causing serious health injuries, fires or explosions. Finding the expiry date is not hard at all if you know the trick. I wonder how difficult it is for the LPG companies to write something like "expiry on march-2010", instead of such an alien code or maybe they too want to hide it.
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Gas Cylinder Safety